Datasets
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Ensemble forecast runs produced by the ECMWF Artificial Intelligence Forecasting System (AIFS) Ensemble model.
4 forecast runs per day (00/06/12/18) 6 hourly steps to 360 (15 days)More information can be found on the implementation page.
X-i: AIFS ENS forecastProduct description
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On 12 May 2026, a new forecast stream will be produced by ECMWF's operational Artificial Intelligence Forecasting System ensemble model (AIFS ENS).
The new forecast stream is for wave forecast runs, marking ECMWF's first operational data-driven wave forecasts.
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4-month long 101-ensemble member seasonal attribution experiment (PC16) initialised on 01-November-2015 using the atmosphere-only version of SEAS5 (see Johnson et al., 2019) forced with daily ERA5 SST as in the reference experiment (R16) but with daily SST climatology over the tropical Pacific Ocean.
Examples
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4-month long 101-ensemble member seasonal attribution experiment (PC20) initialised on 01-November-2019 using the atmosphere-only version of SEAS5 (see Johnson et al., 2019) forced with daily ERA5 SST as in the reference experiment (R20) but with daily SST climatology over the tropical Pacific Ocean.
Examples
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Polar relaxation experiment run at Tco199 for 46 days over 20 years starting on 12, 16 , 19, 23, 26 , 30 December and 2nd, 6th and 9th January 1999-2018.
Examples
retrieve, class=rd, stream=enfh, expver=iknn, type=pf, number=1/to/4, levtype=sfc, param=2t, date=20191212, hdate=20091212, time=00:00:00, step=24, target='output.grib'Retrieving 2-meter temperature of the hindcast starting on 12 December 2019 for all perturbed members.
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These charts show MSLP and 850hPa forecasts for the Ensemble Control Forecast, and 50 ENS ...
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Potential vorticity (PV) helps description and understanding of dynamic processes in the atmosphere by giving an indication of ascending or descending air flows and the development or weakening of ...
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Forecasts using IFS EPS CY47R2 replicating operations (51 members, TCo639, ORCA025Z75). The CO2 concentration was set to 285 ppm. If you are interested in using these data, please let us know by contacting nicholas.leach@physics.ox.ac.uk .
Examples
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Forecasts using IFS EPS CY47R3 replicating operations (51 members, TCo639, ORCA025Z75). The ocean state has had a hydrostatically balanced estimate of anthropogenic influence (warming) since 1850-1900 removed. The CO2 concentration was set to 285 ppm.
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Forecasts using IFS EPS CY47R2 replicating operations (51 members, TCo639, ORCA025Z75). The ocean state has had a hydrostatically balanced estimate of anthropogenic influence (warming) since 1850-1900 removed. The CO2 concentration was set to 285 ppm If you are interested in using these data, please let us know by contacting nicholas.leach@physics.ox.ac.uk .
Examples
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Forecasts using IFS EPS CY47R2 replicating operations (51 members, TCo639, ORCA025Z75). The ocean state has had a hydrostatically balanced estimate of anthropogenic influence (warming) within the CMCC-CM2-HR4 climate model since 1850-1900 removed. The CO2 concentration was set to 285 ppm. If you are interested in using these data, please let us know by contacting nicholas.leach@physics.ox.ac.uk .
Examples
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The reliability diagram shows the reliability of the ECMWF seasonal forecast system (SEAS5) with ...
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This chart shows the Relative Operating Characteristics (ROC) diagram for the three-month ...
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This chart shows the spatial variation in the Relative Operating Characteristics (ROC) skill ...
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The ECMWF seasonal forecasts (SEAS5) are produced every month with a 51-member ensemble at a ...
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